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Beam instability and space‐charge wave amplification caused by the electron injection out of QW into 2deg
Author(s) -
Tralle I. E.,
Sizjuk V. A.
Publication year - 1996
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221960110
Subject(s) - poisson's equation , instability , space charge , physics , quantum tunnelling , electron , plasmon , space (punctuation) , fermi gas , beam (structure) , dispersion relation , dispersion (optics) , condensed matter physics , cathode ray , atomic physics , quantum well , quantum mechanics , optics , laser , linguistics , philosophy
The amplification of a space‐charge wave in a two‐dimensional electron gas induced by a beam instability is considered. The electronbeam is regarded as being injected out of the quantum well by means of resonant tunneling. The beam‐2DEG interaction is treated in terms of thehydrodynamic equations of a two‐component liquid and the Poisson equation. The numerical solution of the dispersion equation is obtained, the increment of SCW is calculated and the dependence of the increment on the frequency tending to the 2D‐plasmon frequency is considered.